Allowance for Credit Losses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	$ 2,757
Current period provision (credit)	(139)	$ 2,723
Write-offs charged against the allowance, net of recoveries of amounts previously written off	(987)
Allowance for credit losses, ending balance	1,631
Trade receivables allowance unrelated to accounts receivable	$ 600		$ 400